MGB - MGA Twincam?

[WSpohn4@aol.com]

Wikipedia says that the MGB had "a number of innovations from the MGA  
Twin-Cam"
 
_http://en.wikipedia.org/wiki/MG_B_ (http://en.wikipedia.org/wiki/MG_B) 
 
I frankly can't think of ANY commonality except perhaps the use of the same  
taper roller bearings in the front hubs. Can anyone else suggest what the  
writers of this reference resource might have been thinking about?
 
Bill